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配置路由
Route::get('test','Test@querys');
Route::get('test/update','Test@updates');
Route::get('test/inserts','Test@inserts');
Route::get('test/del','Test@del');

控制器test.php

<?php
namespace App\Http\Controllers;
use Illuminate\Support\Facades\DB;
class Test extends Controller
{
    public function querys()
    {
//      $res['datalist'] =DB::select("select * from user");
//      $res['datalist']= DB::table('user')->get()->all();
//      條件查詢(xún)
//      $res['datalist']= DB::select('select * from user where uid = :id', ['id' => 2]);
        $res['datalist'] = DB::table('user')->where(['uid' => 2])->get();
        return view("querys", $res);
    }
    public function updates()
    {
//      原生更新操作
//      $res=DB::update('update user set email = :e where uid=:id',['e'=>'5689@qq.com','id'=>3]);
        $res = DB::table('user')->where(['uid' => 1])->update(['email' => 'df688@163.com']);
        var_dump($res);
    }
    public function inserts(){
//        增加操作
//        $res=DB::insert('insert user set username=:n, email = :e ',['n'=>'sam','e'=>'kkk@hotmail.com']);
        $res=DB::table('user')->insert(['username'=>'小白','email'=>'s33@qq.com']);
        var_dump($res);
    }
    public function del(){
//        $res=DB::delete("delete from user where uid=:id",['id'=>5]);
        $res=DB::table('user')->where(['uid'=>4])->delete();
        var_dump($res);
    }
}

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